I use the standard dock wich comes with the Omega and I mean the LED on that board. I simple use a USB cable connected to my Mac just to have power. When I then switch on the Omega via the the small switch only a green LED lights up and nothing else happens.
I follow the getting started guide on your website.

I installed the driver on my Mac (10.11.1) but there is no tty device available. The ember LED on the omega doesn't light up only the green LED on the dock. So connection to the console isn't possible. I only see:

@Thomas-Krampe Can you send me a close up picture of the front and back side of the omega and the dock? Let's see if we can visually identify anything that's causing the problem. If we can't figure out the issue, then we will send you a replacement.